{"id":6254,"date":"2016-09-26T16:24:32","date_gmt":"2016-09-26T16:24:32","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=6254"},"modified":"2016-10-05T13:46:09","modified_gmt":"2016-10-05T13:46:09","slug":"autour-de-saturne-titan-eclipse-rhea","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/09\/26\/autour-de-saturne-titan-eclipse-rhea\/","title":{"rendered":"Autour de Saturne : quand Titan \u00e9clipse Rh\u00e9a"},"content":{"rendered":"<p><strong>Depuis 2004 la sonde Cassini nous fait d\u00e9couvrir Saturne et ses lunes, nous offrant d&#8217;exceptionnelles images comme cette \u00e9clipse de Rh\u00e9a par Titan.\u00a0<\/strong><\/p>\n<p>C\u2019est une exploration qui dure depuis plus d\u2019une d\u00e9cennie. Arriv\u00e9e aux abords de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/03\/02\/partie-de-cache-cache-dans-la-banlieue-de-saturne\/\" target=\"_blank\">Saturne <\/a>en juin 2004, la sonde am\u00e9ricaine <a href=\"https:\/\/www.nasa.gov\/mission_pages\/cassini\/main\/index.html\" target=\"_blank\">Cassini<\/a>\u00a0poursuit inlassablement ses observations scientifiques, nous envoyant r\u00e9guli\u00e8rement d\u2019incroyables images de la plan\u00e8te, de ses anneaux et de ses satellites. Cassini est l\u2019une des plus grosses sondes interplan\u00e9taires jamais construites : elle p\u00e8se 2.150 kg sans compter les 350 kg du module <a href=\"https:\/\/www.nasa.gov\/mission_pages\/cassini\/spacecraft\/huygens.html#.V02vASG8or0\" target=\"_blank\">Huygens <\/a>et plus de 3 tonnes d\u2019hydrazine pour la propulsion. La sonde mesure pr\u00e8s de 7 m\u00e8tres de haut et 4 m\u00e8tres de largeur et emporte 12 instruments scientifiques.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/titan_rhea.jpg\" rel=\"lightbox[6254]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-6255\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/titan_rhea-450x312.jpg\" alt=\"titan_rhea\" width=\"450\" height=\"312\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/titan_rhea-450x312.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/titan_rhea-768x532.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/titan_rhea-1024x709.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/titan_rhea.jpg 1300w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Cette image, r\u00e9alis\u00e9e le 27 octobre 2009, nous montre\u00a0Titan (5.150 km de diam\u00e8tre) et Rh\u00e9a (1.528 km). Titan se trouvait alors \u00e0 1 million de km de la sonde Cassini alors que Rh\u00e9a \u00e9tait \u00e0 2,3 millions de km, ce qui explique sa petite taille.<!--more--><\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/29\/iles-mysterieuses-titan\/\" target=\"_blank\">Titan <\/a>a \u00e9t\u00e9 explor\u00e9 en janvier 2005 par le module Huygens largu\u00e9 par la sonde Cassini. C\u2019est \u00e0 ce jour le record d\u2019atterrissage le plus \u00e9loign\u00e9 de la Terre (1,2 milliard de km). Au cours de sa descente sous un parachute, le module Huygens n\u2019a cess\u00e9 de nous transmettre des donn\u00e9es sur cet \u00e9tonnant satellite naturel glac\u00e9 sur lequel on a d\u00e9couvert des lacs de m\u00e9thane et d\u2019\u00e9thane liquide.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" frameborder=\"0\" width=\"480\" height=\"270\" src=\"\/\/www.dailymotion.com\/embed\/video\/x2hwxgt\" 0=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p style=\"text-align: center\"><strong>En vid\u00e9o : survolez Titan et ses lacs<\/strong><\/p>\n<p>Titan est entour\u00e9 d&#8217;une \u00e9paisse atmosph\u00e8re compos\u00e9e \u00e0 plus de 95% d&#8217;azote. C&#8217;est cette atmosph\u00e8re derri\u00e8re laquelle se glisse <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/07\/21\/cinq-satellites-de-saturne-devant-sonde-cassini\/\" target=\"_blank\">Rh\u00e9a<\/a>,\u00a0un corps glac\u00e9 fortement crat\u00e9ris\u00e9 (second satellite de Saturne en taille) qui fut d\u00e9couvert par l\u2019astronome Jean-Dominique Cassini en 1672.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Depuis 2004 la sonde Cassini nous fait d\u00e9couvrir Saturne et ses lunes, nous offrant d&#8217;exceptionnelles images comme cette \u00e9clipse de Rh\u00e9a par Titan.\u00a0 C\u2019est une exploration qui dure depuis plus d\u2019une d\u00e9cennie. Arriv\u00e9e aux abords de Saturne en juin 2004, la sonde am\u00e9ricaine Cassini\u00a0poursuit inlassablement ses observations scientifiques, nous envoyant r\u00e9guli\u00e8rement d\u2019incroyables images de la &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/09\/26\/autour-de-saturne-titan-eclipse-rhea\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Autour de Saturne : quand Titan \u00e9clipse Rh\u00e9a<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":6255,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[755,938,136,754,567],"class_list":["post-6254","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-module-huygens","tag-rhea","tag-saturne","tag-sonde-cassini","tag-titan"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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